Home / 85,070.84-117,438-56,795.36

Finding the Fourth Proportional to 85,070.84, 117,438 and 56,795.36

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Solution

The fourth proportional to 85,070.84, 117,438 and 56,795.36 is: 78,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.84 : 117,438 = 56,795.36 : x
  2. Step 2: Convert to fraction form
    85,070.84/117,438 = 56,795.36/x
  3. Step 3: Cross multiply
    85,070.84x = 117,438 × 56,795.36
  4. Step 4: Simplify right side
    85,070.84x = 6,669,933,487.68
  5. Step 5: Solve for x
    x = 6,669,933,487.68/85,070.84
  6. Step 6: Final answer
    x = 78,404.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.